A block of mass m is placed on a rough inclined plane with angle of inclination theta. The coefficient of kinetic friction between the block and the plane is mu_k. If the block is released from rest, what is the acceleration of the block down the inclined plane?

g * (sin(theta) - mu_k * cos(theta))

g * (sin(theta) + mu_k * cos(theta))

g * (cos(theta) - mu_k * sin(theta))

g * (cos(theta) + mu_k * sin(theta))

A particle undergoes damped oscillations. Which of the following statements is true?

The energy of the system gradually decreases.

The amplitude of oscillation remains constant.

The frequency of oscillation increases.

The total energy of the system remains constant.

The induced current flows counter-clockwise.

The induced current flows clockwise.

The induced current depends on the velocity.

Four times the intensity of a single wave

Twice the intensity of a single wave

Half the intensity of a single wave

IIT JEE Mains — Physics — Free MCQ Practice Test | testpaper.space